Intersting for sure. I get my 5w30 from the local indy as this is guaranteed to to be right gade but on my 300,000Km 2.7 D4 do i try 5w40 as I know she is getting worn. I do changes every 10,000km or 6 months but there is no definative answer to the age old question.
You won’t get a definitive answer because your engine is now well outside of warranty. The only definitive answer is for the period the engine is under warranty and in which case you only use the oil JLR recommend.
If you have good oil pressure, change the oil ahead of schedule, and you don’t use your D4 under adverse conditions (high loads, hot conditions, high oil temps) then 5W-30 to the right spec (or better) is fine.
If you don’t meet the above, then going to a 5W-40 oil, again to the right spec (or better), can be beneficial.
Neither option is entirely wrong - just one gives better fuel economy, and the other better wear protection.
The caveat on this is extended use under severe conditions which leads to very high oil temps really could use the +10 on the oil grade. Particularly if you have any risk of oil dilution.
The real issue is we are now using these engines well outside what Ford originally designed them for, hence outside of warranty you now pick the oil which suits the conditions you operate in. The good news is the specs for oils available today are certainly better than the oil specs available when the 2.7 TDV6 was originally designed - so you have plenty of good choices.
Looking forward to the tear down of the 2.7 engine on LRTime with 270k kms will be super interesting what the wear looks like.
So what was your thoughts seeing the strip down?
The mains looked good for an easy 500-600K, pity the conrod bearings were already worn beyond their tolerance limit.
The problem is we don’t know what the original clearances were other than assuming they could have been at the lower end of the min/max spec range.
Some relief as similar age engines kms and service interval on mine.
ShaneLR has 430k km on his so seems if Pommy Dave in the factory has properly made the crank and you’ve serviced it keep going.
The fact you can’t get OEM bearings and the variable quality he’s finding on aftermarket items is more troubling. Best let sleeping dogs lie.
If anything what Christian does well is triple check every component for tolerance.
There’s plenty of guys who’ve dropped in new bearings but I’d guess taken no measurements before or after.
What would definitely be worth doing is a big refresh on the heads as this is pretty standard on heavy diesel maintenance the heads will be done at half time of the full overhaul.
2010 TDV6 3.0L Discovery 4 SE, Alaska White, GME XRS-330c, IIDTool BT, Traxide D3-DU Dual Battery Kit, Apple CarPlay, Power and Heated Seat retrofit, Rhino Rack Batwing Awning (Part time install), BFG KO2 for play
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